on a trailer wire connector (where you connect the trailer wires to the truck wired) which one is hte reverse lights? It's a four wire plug. 3 male 1 female. the female is white. The male next to it is brown. The middle male is yellow and the male next to that is lime green. Thanks for the help.

Sam

 

white--------ground
brown-------running/tail lts.
yellow-------left turn/brake lts.
green-------right turn/brake lts.

 

Translation.... the reverse light signal is not available!

 

aww crap! so that means i can't just hook up my extra backup's to my trailer lights huh? that sucks. So if i am correct i now need to just put them straight up to teh wire going to the stock ones? Would this casue any electrical problems?

 

if you're hauling a big enough trailer, and want all of the extras (like backup lights) you should probably invest in a 7 pin harness.

 

I agree with J-150.

It looks easy enough. Here's how:
7-pin Conversion

Thanks to LarryS43 for the part numbers.